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Journal of Preventive Medicine and Public Health 2006;39(5): 389-396.
Prevalence and Associated Factors of Osteoporosis among Postmenopausal Women in Chuncheon: Hallym Aging Study(HAS).
Soong Nang Jang, Young Ho Choi, Moon Gi Choi, Sung Hyun Kang, Jin Young Jeong, Yong Jun Choi, Dong Hyun Kim
1Institute of Health and Environment, Seoul National University, Korea.
2Department of Family Medicine, College of Medicine, Hallym University, Korea.
3Department of Internal Medicine, College of Medicine, Hallym University, Korea.
4Department of Statistics, Seoul National University, Korea.
5Institute for Aging Studies, Hallym University, Korea.
6Department of Social and Preventive Medicine, College of Medicine, Hallym University, Korea. dhkims@hallym.ac.kr
OBJECTIVES: A community-based, cross-sectional survey was conducted to determine theprevalence of osteoporosis and to evaluate the effects of body composition, health behaviors and reproductive history on bone density in postmenopausal women. METHODS: The study subjects were 362 postmenopausal women, aged 45 years old or over, who were invited to the hospital. Information on their socio-demographic characteristics and the potential risk factors such as their past medical history, smoking, alcohol intake, exercise, diet and menstrual/reproductive histories were collected by trained interviewers. Weight, height, the body mass index (kg/m2), and body composition variables were measured. Bone mineral density of the lumbar spine was measured by dual energy X-ray absorptiometry (DXA). RESULTS: The prevalence of osteoporosis was 30.6% in the 45~64 years old women, 52.5% in the elderly women aged 65~74, and 68.7% in the women aged 75 years or over. After adjustment for the effect of potential covariates, those women in the highest 25% (4th quartile) of the lean body mass are less likely to have osteoporosis (aOR=0.31, 95% CI=0.12-0.76), compared with the lowest quartile group. More parity also had significantly detrimental effects on osteoporosis. CONCLUSIONS: These findings suggest that the prevalence of osteoporosis in postmenopausal women increased with age from 46.3% of those aged 45-64 to 68.7% fo those aged 75 and over. Lean body mass and parity appeared significant contributor to bone mineral density in postmenopausal women in this population.
Key words: Osteoporosis; Postmenopausal women; Bone mineral density
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